java操作hdfs上传文件 java写文件到hdfs

package com.lijie.uploadsingle;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

public class UploadSingle {
    public static void main(String[] args) throws URISyntaxException, IOException {
        Configuration conf = new Configuration();
        URI uri = new URI("hdfs://lijie:9000");
        FileSystem fs = FileSystem.get(uri,conf);
        Path resP = new Path("F://a.txt");
        Path destP = new Path("/aaaaaa");
        if(!fs.exists(destP)){
            fs.mkdirs(destP);
        }
        String name = "F://a.txt".substring("F://a.txt".lastIndexOf("/")+1, "F://a.txt".length());
        fs.copyFromLocalFile(resP, destP);
        System.out.println("name is " + name);
        fs.close();
    }
}